(19)
(11) EP 0 999 364 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.02.2001 Bulletin 2001/07

(43) Date of publication A2:
10.05.2000 Bulletin 2000/19

(21) Application number: 99121751.4

(22) Date of filing: 03.11.1999
(51) International Patent Classification (IPC)7: F04B 27/10, F16J 15/32
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 04.11.1998 JP 31350598

(71) Applicant: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
Aichi-ken (JP)

(72) Inventors:
  • Sugiura, Manabu, c/o K.K. Toyoda Jidoshokki
    Kariya-shi, Aichi-ken (JP)
  • Kondo, Yoshitami, c/o K.K. Toyoda Jidoshokki
    Kariya-shi, Aichi-ken (JP)

(74) Representative: Leson, Thomas Johannes Alois, Dipl.-Ing. et al
Patentanwälte Tiedtke-Bühling-Kinne & Partner, Bavariaring 4
80336 München
80336 München (DE)

   


(54) A shaft seal assembly including a drain passage


(57) An oil sealing structure having a draining passage (39) for draining oil from a seal assembly (17). The seal assembly (17) is located between a housing (11), and a drive shaft (15). A first seal member (31) contacts the inner wall of the housing (11). A second seal member (33) contacts the drive shaft (15). An oil barrier (37) is located frontward of the first and second seal members (31, 33). The oil barrier (37) extends toward the drive shaft (15). A plurality of drain passages (39) connect the inner side and the outer side of the seal assembly (17) between the oil barrier (37) and the second seal member (33). Oil that leaks past the second seal member is stopped by the oil barrier (37) and is drained to a location outside the seal assembly (17).






Search report